(19)

(11)

EP 2 122 735 A1

(12)

(43) Date of publication: 25.11.2009 Bulletin 2009/48 (21) Application number: 08715614.7 (22) Date of filing: 11.03.2008

(51) International Patent Classification (IPC):  H01M 8/16(2006.01) H01M 4/86(2006.01) (86) International application number: PCT/DK2008/050060 (87) International publication number: WO 2008/110176 (18.09.2008 Gazette 2008/38)

(84) Designated Contracting States: AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MT NL NO PL PT RO SE SI SK TR (30) Priority: 12.03.2007 DK 200700379 12.03.2007 US 906361 P 07.06.2007 EP 07109822 (71) Applicant: Danmarks Tekniske Universitet (Technical University of Denmark) 2800 Lyngby (DK)	(72) Inventors: MIN, Booki DK-2720 Vanløse (DK) ANGELIDAKI, Irini DK-FREDERIKSBERG 2000 (DK) (74) Representative: Plougmann & Vingtoft A/S  Sundkrogsgade 9 P.O. Box 831 2100 Copenhagen Ø 2100 Copenhagen Ø (DK)